Lubricating device.



No. 817,084. PATENTED APR. 3, 1906. W. E. MOORE z J. W. BRIDGE.

LUBRIATNG DEVICE.

APPLIUATIOH FILED JUNE 6.1905.

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WlLLlAll/l E. MOORE-OF CONNELLSWJLE, AND JAMES W. BRIDGE, UF

NEWHAVEN, PENNSYLVANIA.

- wennen-'raue Device.

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Specication of Lettere Patent.

Patented April 3, 11906..

Vand useful Improvements in Lubricating Devices, of which the followingis a specification.

The principal object oi this invention is the providing of means wherebyelectric-railway motors constructed for grease lubrication of theirjournal-bearings may be converted into oil-lubricated motors.

' signed for l,a grease-cup.

The lubrication of electric-railway motors has for a number of yearsbeen eiected a1- most exclusively by the use of grease placed in recetacles known as gravity @reasecups, ocated over Ithe journals. rease,however, is satisfactory for such motors only when the bearing is heatedsufficiently to make the rease run like oil. For this reason, as wel asothers, oil has been found to` be superior to grease as a lubricant forrailwaymotors and is now being used to a consider able extent for thatpurpose. The l ractical qluestion, therefore, arose as to how t ie manyt iousands of motors equipped with gravity greasecups could be convertedinto oil-lubrif cated motors.

The primary object of thisinvention is to eilect a solution of .theproblem by using the former grease cups as receptacles for oilcupsconstructed with this eculiar end in view and adapted to meet t erequirements for more erfect motor lubrication.

With t e above'object in view our inv ention consists in the novelcombination and arrangement oic parts herein described, and moreparticular y pointed out in the accompanying claims, l

In the accompanying drawings, which form a part of `this specification,Figure 1 repre sente in vertical section a portion of a easing andjournal-bearing of an electric-railway motor designed originally forgrease lubrication and provided with o ur improved form of oil-cup, andFig.'2 represents a top plan view j of the cup with its cover removed.

Referring to the accompanying drawings, A represents a portion of vanelectrical-motor casing provided with a journal-bearin portion B,'having a receptacle C, original y de- E represents a bushing for thejournal D. In carryng vout our invention we employ lthe orinergrease-cupC as the receptacle for lan oil-cup, which latter fits bodily thercinto.This oil-cup consists, among other parts, of a cup portion 1, preferablymade of cast-steel, though it Ifiay be made of iressed metal or built uin any other desired wayout of any desire material. N ear the upper endofthe cup,l and preferably formed integral there with, is aninwardlyextending ledge or flange 2, the object of which is to preventwaste of oil and the entrance of dust into the cup, as will hereinaftermore Jfully appear. ln the form of the cup shown the lower half is madeslightly smaller in cross-section than the uper portion,- forming ashoulder 3. @n the oWer end o' the cup is an extension 4, through whichpasses an opening 5 to the interior of, the cup. Intofthe lower end ofthis openingV is tightly forced a hollow plug 6, having a contractedoil-outlet 7, forming a valve-seat 8, upon which rests a ball-valve 9.Upon the top of this hollow plug is placed a screen 10, consisting ofadish of 'linemiesh wire or other suitable material. nto the upperortion of the operiin,J 5 is forced tight y a tu e 11, which extends romsaid screen up- Ward a suitable distance, preferably to a point near thetop of theoil-cup. lntofthis tube extends a wick 12, which passes froma.

suitable oint in the oil-cup, preferably the bottom t creol, down to thescreen or a roper distance therefrom. The portion of t e cup below theshoulder 3 is made of such a shape as to lit easily but snugly into thereceptacle C, the shoulders 3 resting upon a felt strip 13 around thetop of the opening of said receptacle.

The object ofthis felt strip is to'prevent dust and dirt fromworking-down the side of the cup to the ljournal. The lower ortion ofthe cup is shaped to conform to tie interior of the receptacle C, asshown, the extension 4 passing down to a point near the journal, asshown. The cup is held fast in osition by a set-screw 14, arranged to beloclied by a nut 15. A stifl'ening-rib` 16 extends around the interiorof the cup in line with the portion engaged by said set-screw. Near theupper edge of the cup are formed two lugs 17, to.

lnasi* which are hinged a suitable top 18. much as the hinged top of theformer Droast cupwould naturally be out of use as ong as the oil-cup isinserted vin such receptacle, this cover may be used as the cover forthe oilcup.

It will be observed from an'inspection of the drawings that the oil 19will befed through the wick by capillary attraction down to t e screenl() and thence to the ball-valve, whichk by the vibration of the bearingallows the oil to be fed down through the outlet 7. When the vibrationof the bearing ceases, the ball 9 becomes seated, thus cutting off theHow of oil. The oil is prevented from shaking out of the top of the cup,due tothe vibration of the said cup, by means of the iiange 2. Thisliange, moreover, acts as a dustuard and is an important factor inkeeping t e oil clean.

v thereby ten ing -to hold the ball from its seat,

' cups.

v oil-cup is minimum, there pi.

thus overcominj'gd a' very serious disadvantage which is inhere'nt inmany forms of wick-feed A further advantage of this form of that thejoints are reduced to a being no holes drilled in the except the opening5 in the bottom therecup This reduces the leakage of oil'to a minimum.

In practice the bottom of the oil-cup may extend, as shown, down intoclose proximity with the journal, and thus the heating of the journaland bearing may be used to revent the oil from congealing in extremeycold weather. Y

While we have thus described a specific form of our invention and shownthe samelas appliedv in a particular way to a motor-bearing, it is notour intention to limit ourselves to the speciiic case illustrated, sincethe principle ot' the invention may be embodied in manyA diHerentslpeciiic forms and applied to many different indsv of journal boxes andbearings.

l. An oil-cup having a non-supporting integral projecting lug on vthebottom of the cup from the interior of said cup, a valve controllingsaid oil-outlet, a wick-feed to deliver oil and an oil-outlettherethrough vleading i to said valve, and an annular ledge on theexterior of the body of the cup a apted to support said cup.

.2. The combmationwith a casing provided with a j ournal-bearing portionhaving a receptacle therein and apassage leading from the interior ofsaid receptacle to the journal, of an oil-cup adapted to iit bodily intosaid receptacle and to extend above the same, the

vsaid cup being provided at its lower end with a non-supportingextension 4 adapted to pass through said passage and into proximity tothe journaland-having an oil-outlet therethrough leading from theinterior of said cu a valve controlling saidvoil-outlet, a wiel()- feedcontrolling the supply of oil to said valve, and an integralsupporting-ledge extending around the exterior of the body ofthe cup.

3. `The combination With a casing provided with a journal-bearingportion having a receptacle therein and a passage leading from theinterior of said receptacle to the journal,

of an oil-cup adapted to iit bodily into said receptacler to extendabove said receptacle and provided at its lower end with an extensionadapted topass through the bottom of said receptacle into said passageand into proximity to the journal and with an oiloutlet through saidextension, a valve controlling said oil-outlet, a wick-feed controllingthe supply of oil to saidvalve, an annular supporting-ledge around theoutside of said cup, adapted to rest on the upper edges of saidreceptacle, and an oil-guard -liange extending around the interior ofthe cup near its top.

4. The combination with a casing provided with a journalbearing portionhaving a rece tacle therein and a passage leading from the interior ofsaid receptacle to the journal, of an oil-cup adapted to iit bodily intosaid receptacle and having an aperture through its lower end, a hollowplug iitting tightly into said aperture and rovided with an oil-vvoutlet, a ball-valve wit in said hollow plug controlling said outlet, ascreen within said aperture over said valve, a tube iitting tightly intosaid aperture above said Screen and extending upward to a point near thetop oi the cup, and a wick extending down into said tube from theinterior of the cup.

In testimony whereof we aflix our signatures in presence of twowitnesses.

WILLIAM E. MOORE. JAMES W. BRIDGE. Witnesses:

l E. A. WILoox,

CRETE LANG.

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